All Questions

0
votes
0answers
8 views

How to check ETH contract deposit? [migrated]

I want to check ETH contract deposit. ETH contract deposit : (https://etherscan.io/tx/0xc4ae4e2444e91b02633cc771468585c954cc444e300ddceb659776287a4bdd39) { "blockHash": "...
0
votes
1answer
24 views

mining difficulty is not changed on regtest

I want to see the automated mining difficulty change on regtest but it did not change even I generated 2016 blocks. How can I see it? // initial difficulty $ ./bitcoinA/src/bitcoin-cli -rpcuser=...
0
votes
2answers
22 views

Single “Multiple Inputs Tx” vs Multiple “Single Input Tx”

Alice owns three addresses A1, A2, A3. She decides to collect the coins held by these addresses into a single coin so she generates a fresh new address A4 for that. She has the following two options: ...
0
votes
1answer
40 views

convert “M” address to “3” address LTC

currently im facing with 1 issue that i need to convert all my litecoin address in my fullnode to legacy address (prefix with "M"). Im know that we have a tool https://litecoin-project.github.io/p2sh-...
0
votes
1answer
20 views

Private Blockchains: Validation

I'm a software developer, and I have some questions about private blockchains, I'd like to have technical answers since I'm trying to understand blockchain at a code level. I'm going to write a ...
0
votes
1answer
22 views

I can pay invoices on my mainnet LND node, but others cannot pay my invoices

I have an LND node running the 0.5.2-beta release on a 2 core, 8GB ram Ubuntu 16.04 VM. This is my node: https://1ml.com/node/02d5efae50c1cdc6011e40b74f061ea4f444088865ec14a59e4ee6cf0d71c842fc I used ...
0
votes
1answer
25 views

Two question about bitcoin transaction signing

I know that the signing should use public key, what if the private key is used in signing the output? Does that mean anybody can use the money in your wallet? And is there any difference between P2PKH ...
0
votes
1answer
19 views

Dogecoin Scrypt mining hashes python

I know making a miner in python is inefficient and unprofitable, however I would like to do it as an experiment. What exactly is the code to generate a Scrypt mining hash in python? For example, I ...
-1
votes
0answers
10 views

Does a new initialised blockchain contain any predefined values except the nonce?

If i want to create a blockchain, i create a (so called genesis) block and create a hash from it. For example i assign 0 as nonce for the first block Do i have to pregenerate all blocks (maybe empty ...
0
votes
2answers
30 views

Can I mine bitcoin testnet coins with my regular bitcoin asic miner?

Is it possible to use my bitcoin asic miner to mine testnet bitcoin coins? Is there special software I need? can I join a testnet pool or is there even such a thing?
0
votes
1answer
30 views

How does a node decide whether a block is valid?

I'm a software developer, and I've been trying to figure out how a node decides whether a block is valid, I do understand the hashes in bitcoin, the merkle root, and all those aspects but my question ...
-1
votes
1answer
16 views

How to prevent nodes from creating only small blocks to earn fee?

I read What are the minimum sizes for transactions and blocks in Bitcoin? that there is no min limit - just a max limit of 128MB - for a block. For example if a miner always takes a single ...
0
votes
2answers
57 views

Private key of a specific bitcoin address [duplicate]

I need to find out the private key of a specific bitcoin address '1FVoAyGnHueH1uNR4dAQgRZcsBkAd3Mo3K'. This is the bitcoin address of a scammer who made me lose my last savings in the name of ...
1
vote
1answer
29 views

Coinbase Pro historical data not working

I'm trying to pull historic data from the Coinbase Pro api using Python with the cbpro package. For some reason I either hit an error, or can only pull data from the last 350 days. If I run the ...
1
vote
1answer
26 views

Is there any “permissionless” blockchain “without a native coin”?

We may certainly say that a "permissioned" blockchain cannot have a native coin (or cryptocurreny) since in permissioned blockchain we need a permission to be eligible to participate for transactions ...
1
vote
3answers
51 views

When joining the bitcoin network, why aren't we connected to the most geographically closest nodes?

Is this a safety/security reason or is it just convenience?
0
votes
1answer
29 views

Transaction version 2 - bytes between tx version and number of inputs

In the bitcoin transaction version 2, there are additional two bytes (hex: "0001") between transaction version (hex: "02000000"), and number of inputs (hex: "01"). What it is? Here's an example https:...
0
votes
1answer
26 views

what is making bitcoin not to have arrived since days [on hold]

Last Saturday, I sent some bitcoin from paxful to an external wallet but my wallet shows that it has not arrived yet but the blockchain shows that the payment was a success. What is happening?
0
votes
0answers
11 views

What is the most suitable time interval to analyze data

I'm statistically analyzing the bitcoin prices. We have the ability to analyze them based on hourly, daily, monthly etc. So based on the requirement it is possible to select the period. Consider if we ...
1
vote
0answers
18 views

How i can connect to bitcoin core light server?

Need a bunch of Laravel + Bitcoin Core. Need a light version of bitcoin bark. Installed as follows: sudo apt-get install build-essential && sudo apt-get install libtool autotools-dev autoconf ...
0
votes
1answer
18 views

Is an extraction of the mnemonic string possible if wallet and corresponding passphrase are in possesion?

My problem is that I have access to my wallet and I am able to access it with Electrum because I have the passphrase but I somehow misplaced the seed. Is it possible to decrypt/extract and obtain the ...
0
votes
1answer
20 views

Which price need to be taken for bitcoin analysis

I'm doing a bitcoin statistical analysis using Python. The bitcoin prices consist of close,open, low, high prices per an hour. For statistical analysis, which price do I need to take to consider. Is ...
0
votes
0answers
20 views

Public / ePub / Private Keys [on hold]

I have googled a lot but I still didnt get the answer right about the following questions in terms of Crypto: What is Public Address? What is ePub Address? What is Private Keys? Is it Safe to give my ...
-3
votes
1answer
47 views

Reset or backup from a blockchain possible? [on hold]

i have a coin for my own interests. With this i will learn how works all. So i have install the daemon on a vps All works fine. Mining works. And the first 300 blocks i have created. Now i will ...
0
votes
1answer
19 views

Using only Javascript and JS related Bitcoin Libraries. How do you extract the Bitcoin Address from a private key?

I'm building an js related application that only stores my user's bitcoin private keys, but not the public key or bitcoin address to save space. Is there a javascript library that can output the ...
-1
votes
1answer
19 views

How to test your buy/sell code for Poloniex API? [closed]

Is there some kind of sandbox environment to test my code or do I have to buy/sell with real money?
0
votes
0answers
8 views

Getting a dollar per KWH estimate for the best crypto currencies for last X months

I'm doing some preliminary research for my company into the viability of cryptocurrency mining, were not planning to mine it ourselves, but it's indirectly relevant; it's kind of a long story. To ...
0
votes
1answer
39 views

Are Tor .onion-addresses IP address independent?

Is it possible to move the node to a different IP address and keep the existing (=preciously open and funded) channels functional?
0
votes
2answers
47 views

How to change RPC port for bitcoind? (rpcport=xxx in bitcoin.conf doesn't work)

I'm running a testnet bitcoind node and I have been doing RPC calls on the default port 18332. I have added this line to ~/.bitcoin/bitcoin.conf: rpcport=19832 And restarted the bitcoind service. I ...
0
votes
2answers
26 views

Is there a way that we can report a Bitcoin scam?

Good day Is there a way that we can report a Bitcoin scam? I was recently scammed over R200000 therefore I would like to report the person and the platform to alert people of her fraudulent platform.
1
vote
3answers
37 views

Lightning: Why would Bitcoin Network Accept a Breach Remedy?

The Lightning Network Whitepaper discusses a situation in which one party of a payment channel broadcasts an outdated commitment transaction. The other party through a breach remedy transaction will ...
0
votes
2answers
41 views

What Opcodes are used to store a file within Bitcoin? [on hold]

At a block-to-block level, what is actually encoded at a byte[] level to encode a file stream?
1
vote
1answer
27 views

Which is the more productive miner output k/sh or G/hs

Which would be the most efficient and profitable miner, one at k/hs or g/hs ? I am seeking to find which "miner" algorithm i.e. daggerhashimoto blake2s etc would be best to mine with most of the ...
0
votes
1answer
30 views

Do checkpoints affect initial chain sync time?

I've seen some guides that suggest that initial sync time for a new full node can be accelerated by setting checkpoints: false but I don't understand why that would be the case. My thinking is the ...
1
vote
1answer
42 views

If Bitcoin addresses are a single-use token, how several transactions belong to a single address? (Edited)

While in Bitcoin wiki (Link to the page) is explicitly mentioned: "A Bitcoin address is a single-use token." We therefore expect that every address would be belonged to only a single transaction ...
0
votes
2answers
27 views

What is the most optimal way to parse a raw bitcoin block with python?

Let's say one is connected to a zmq socket and listening for rawblock. How you'd parse the block header is as follows: block_header = raw[:80] version = block_header[:4] prev_merkle_root = ...
0
votes
1answer
31 views

`lnd` on Raspberry pi zeros?

Did somebody try to run the bitcoind full node on the Raspberry pi 3 and one or more lnd nodes on one or more Raspberry pi zeros? My goal is to support multiple LN clients without having to run a ...
1
vote
1answer
29 views

How to send payment through a predefined route?

Attempting a payment through a predefined route using: lncli -network=testnet queryroutes 02e34c1b4c5f8e7419cf4d10e3bc9651d46dc1af68df6a7b81a24951a9192aa9c4 25000 | lncli -network=testnet sendtoroute ...
0
votes
1answer
32 views

Is there a guide to set up and use http://lndhub.io

on top of raspibolt or raspiblitz? My goal is to support multiple LN clients without having to run a full node for each client.
0
votes
1answer
20 views

Bitcoin websocket like ws.blockchain.info

I'm currently using ws.blockchain.info to subscribing to an address, but it is not really stable and frequently connected. Please tell me some alternatives for it. Thanks.
0
votes
1answer
10 views

Why is the site Copay.io still offering a link to the Google play store while the app is not available there neither from the app store [on hold]

Step 1 : Use a browser to go to copay.io Step 2 : Select "Get Copay" Step 3 : Select "Get it on Google Play" Step 4 : Read : "We're sorry, the requested URL was not found on this server." What is ...
0
votes
0answers
8 views

mining pool hub working but there is no active

i try run mining with Ethminer fork. and with version 0.18.0 -alpha.3 mining is correctly working. i'm waiting 10 minutes, and looking monitoring page on mining pool hub, but overview's hashrate is ...
0
votes
1answer
37 views

Lost bitcoin because of deleted receiving wallet id

Is it possible to recover the bitcoin that was sent to a wallet that generated using payeer which I deleted on accident? The transaction also shows completed from the other wallet.
0
votes
2answers
36 views

How could LN mitigate NAT transversal problem?

As we all know, IPv4 address space is already exhausted, many ISPs have deployed carrier grade NAT (CGN). So how could an LN node living behind NAT deal with NAT transversal problem? How could two ...
0
votes
1answer
25 views

Watch Only Wallets

I don't understand the point of a Watch Only Wallet. I've seen posts that state these wallets don’t contain any private keys, which means they can’t be used to spend coins they receive. In which case ...
1
vote
1answer
23 views

Holding Period Algorithms and the Blockchain

According to this interview, taxation holding periods in the United States for cryptocurrency can be determined by FIFO (First In First Out), LIFO (Last In First Out), or a more flexible option called ...
1
vote
1answer
37 views

Lightning Network: Isn't there a risk in spending more BTC than needed?

Say, I want to establish a payment channel with an individual, Jim. I want to make 10 monthly payments of 0.01BTC to him for a total of 0.1BTC. I don't want to spend 0.1BTC at once, but in order to ...
0
votes
0answers
27 views

Check an outpoint's scriptPubKey against known scripts

So I would like to check if coin.out.scriptPubKey is part of GetScriptForDestination(mypubkey.GetID()) A simple comparison isn't possible as the scriptPubKey (when I decode it) contains only the ...
1
vote
0answers
13 views

How to use Electrum GUI and Daemon at same time in seperate shell?

I'm running electrum via gui,and when I use the console the Font is so small and I haven't found a way to increase the size of console output. Is there a way to increase the size of text ? If not is ...
0
votes
2answers
31 views

Information to recipient of the transaction

I have some questions of the transactions bitcoin, In a transaction bitcoin, there is not information on the recipient, right? How do services such as blockchain.com track information about a ...

15 30 50 per page